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Marquise|Natural|IGI

1.21ct J SI2 Marquise Natural Diamond

VG • J/SI2 • IGI 845618790

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 845618790

Diamond specifications and retailer prices

From £631 GBP
As of November 5, 2026
Save £488 GBP (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,120 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 845618790. Listed at 6 retailers as of November 5, 2026, with prices from £631 to £1,120, a £488 spread on the same certified stone. Wholesale Diamonds Direct lists it at £1,120. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle42°
Pavilion angle40.1°
OriginNatural
Grading LabIGI
CertificateIGI 845618790
Dimensions10.23 × 5.46 × 3.60 mm
L/W Ratio1.87
Girdle conditionFaceted
Top View
10.23 mm5.46 mm1.21 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 845618790
Side View
Table 57.0%Crown 42°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 65.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £722 GBP|Low: £631 GBP|High: £1,193 GBP|Avg: £902 GBP|-3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Wholesale Diamonds Direct
November 6, 2026
Retailer 3£631 GBP
Retailer 5£698 GBP
Retailer 1£722 GBP
Retailer 4£743 GBP
Retailer 2£1,015 GBP
Wholesale Diamonds Direct£1,120 GBP

10 data points across 6 retailers

6 retailers£631 GBP to £1,120 GBP

A
Cheapest Retailer
-
£631 GBP
B+
Retailer 2
-
£698 GBP
View
A
Retailer 3
-
£722 GBP
View
B+
Retailer 4
-
£743 GBP
View
B+
Retailer 5
-
£1,015 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
676499745 · Nov 6
£1,120 GBP
$1,499 USD
View
5 more retailers have this diamond
Prices start from £631 GBPSave up to £488 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.21ct Marquise
£631 GBP